A new genus and two new species of Stevardiinae (Characiformes: Characidae) with a hypothesis on their relationships based on morphological and histological data

Autor(es)

Ferreira, Katiane M. ^[1] ; Menezes, Naercio A. ^[1] ; Quagio-Grassioto, Irani ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Museu Zool, Lab Ictiol, BR-04263000 Sao Paulo - Brazil

^[2] Univ Estadual Paulista, Inst Biociencias, Dept Morfol, BR-18618000 Botucatu, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Neotropical Ichthyology; v. 9, n. 2, p. 281-298, APR-JUN 2011.
• Citações Web of Science: 14

Resumo

Lepidocharax, new genus, and Lepidocharax diamantina and L. burnsi new species from eastern Brazil are described herein. Lepidocharax is considered a monophyletic genus of the Stevardiinae and can be distinguished from the other members of this subfamily except Planaltina, Pseudocorynopoma, and Xenurobrycon by having the dorsal-fin origin vertically aligned with the anal-fin origin, vs. dorsal fin origin anterior or posterior to anal-fin origin. Additionally the new genus can be distinguished from those three genera by not having the scales extending over the ventral caudal-fin lobe modified to form the dorsal border of the pheromone pouch organ or to represent a pouch scale in sexually mature males. In this paper, we describe these two recently discovered species and the ultrastructure of their spermatozoa. (AU)

• Processo FAPESP: 07/52755-4 - Estudo das relacoes filogeneticas da tribo diapomini (characiformes: characidae) e caracideos inseminadores (insertae sedis), baseados em caracteres osteologicos, anatomicos e histologicos.
• Beneficiário: Naercio Aquino Menezes
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 07/52756-0 - Estudo das relações filogenéticas da tribo Diapomini (Characiformes: Characidae) e caracídeos inseminadores (Incertae sedis), baseado em caracteres osteológicos, anatômicos e histológicos
• Beneficiário: Katiane Mara Ferreira
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado